The invention belongs to the aerospace field and particularly relates to a driving device suitable for the space environment. A gear wheel is bonded with an output shaft which is supported by a bearing which is arranged on a reducing gear box body and on a reducing gear box back plate and a pinion shaft is engaged with the gear wheel to form a reducing mechanism; a stepping motor drives the pinion shaft; a rotation angle sensor detects a rotation angle of the output shaft; a heating resistor is arranged in an interlayer shell; a thermocouple is pasted on an inner wall and paraffin of which filling melting point is 40 DEG C is filled in the interlayer. All electric signals are connected with a controller through an electric connector and the working environment temperature of the motor is controlled by the controller, so that normal stepping motors are suitable for the space environment to obviously reduce the cost of aerospace driving mechanisms.